Question

Asked Oct 14, 2019

A chemist has two alloys, one of which is 5% gold and 10% lead and the other which is 20% gold and 50% lead. How many grams of each of the two alloys should be used to make an alloy that contains 39 g of gold and 87 g of lead?

Step 1

Given,

A chemist has two alloys, one of which is 5% gold and 10% lead and the other which is 20% gold and 50% lead.

The each of the two alloys should be used to make an alloy that contains 39 g of gold and 87 g of lead.

Let amount of 1st alloy be x and amount of 2nd alloy be y.

Step 2

Now,

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